ASTROSAT CZTI

Data Quality Report

Orbit 45859

Creation date: 2024-06-27T23:17:00.116533
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_187T01_9000006132_45859cztM0_level2.fits modeM0/AS1T05_187T01_9000006132_45859cztM0_level2_quad_clean.evt
Size (bytes)1,109,255,040158,673,600
Size1.0 GB 151.3 MB
Events in quadrant A9,236,9351,169,901
Events in quadrant B16,255,506819,699
Events in quadrant C4,759,8601,159,268
Events in quadrant D9,953,230888,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346401
B0561401
C0224851
D0374701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110731731.562359%
B11073390735.284024%
C11073430.388332%
D11073173315.650682%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 11493 11075 1 1 0.01% 0.01%
B 11493 11075 2710 2710 23.58% 24.47%
C 11493 11075 2 2 0.02% 0.02%
D 11493 11075 1448 1448 12.60% 13.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 4460336 17523.82 1217 1189 254.5
A 0 247 32050 121.28 1217 1189 254.5
A 14 235 20744 76.85 1217 1189 254.5
B 3 112 10522152 50980.6 1052 1019 206.4
B 4 171 757356 3664.86 1052 1019 206.4
B 0 171 322826 1559.33 1052 1019 206.4
C 2 14 43882 152.23 1200 1207 280.3
C 14 254 15716 51.76 1200 1207 280.3
C 12 249 8115 24.64 1200 1207 280.3
D 13 249 4140078 14799.81 1111 1078 279.7
D 1 52 432963 1544.29 1111 1078 279.7
D 2 249 304308 1084.26 1111 1078 279.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter